Abstract: An object of the present invention is to provide, for example, a novel method for synthesizing a fluorovinyl ether compound from a fluorine-containing vinyl compound.

Abstract: A rotor includes a rotor core. The rotor core has an outer shape including a first arc portion provided so as to intersect a d-axis, a straight line portion provided so as to intersect a q-axis, and a curved portion that connects the first arc portion and the straight line portion. The first arc portion has an arc shape centered on an axial center of the rotor core. The curved portion includes an arc-shaped second arc portion that bulges outward in a radial direction of the rotor core. The radius of curvature of the second arc portion being smaller than a radius of curvature of the first arc portion.

Abstract: A refrigerant leakage management system includes a timer and a controller. The timer counts a non-operating period of a refrigeration cycle device. The controller determines whether or not the non-operating period of the refrigeration cycle device exceeds a predetermined first period. Upon determining that the non-operating period of the refrigeration cycle device exceeds the first period, the controller brings the refrigeration cycle device into operation or notifies an administrator of the refrigeration cycle device.

Abstract: An air conditioner has a heat source unit and a utilization unit, and includes a refrigerant circuit, a first detector, and a controller. The refrigerant circuit is configured by a compressor, a condenser, an expansion mechanism, and an evaporator being connected by a refrigerant pipe. The first detector detects the temperature or pressure of refrigerant in the refrigerant circuit. The controller starts the compressor during the non-operation of the compressor and executes a determination mode to determine the presence or absence of refrigerant leakage from the refrigerant circuit on the basis of a detection value of the first detector.

Abstract: A positive electrode mixture containing a polyvinylidene fluoride (A); a fluorine-containing copolymer (B) containing vinylidene fluoride unit and tetrafluoroethylene unit; a positive electrode active material (C) represented by the general formula (C): LiyNi1-xMxO2, wherein x is 0.01?x?0.7, y is 0.9?y?2.0, and M represents a metal atom (excluding Li and Ni); and an additive (D). Also disclosed is a positive electrode formed from the positive electrode mixture and a secondary battery including the positive electrode.

Abstract: A compound for use as a cross-linking agent represented by the following formula (1) wherein R1 is —SO2—, —O—, —CO—, an optionally substituted alkylene group, a group represented by the following formula (2) or a single bond; and two As are each independently an aromatic ring group containing a 5- or 6-membered aromatic ring and optionally containing a substituent, where the aromatic ring group contains a substituent in the case where the aromatic ring group is a monocyclic aromatic ring group containing a 6-membered aromatic hydrocarbon ring. Also disclosed is a composition containing the cross-linking agent.

Abstract: An air conditioner includes a refrigerant circuit, sensors that measure an amount representing a state of refrigerant in the refrigerant circuit, and a controller. The controller executes normal operation according to air conditioning load and a first detection operation of detecting refrigerant leakage. The controller adjusts a degree of subcooling at an outlet of the condenser to a first value during normal operation. The controller detects a value related to discharge temperature of the compressor or a value related to degree of superheating at an outlet of the evaporator, based on a sensor measurement result. The controller adjusts degree of subcooling to a second value larger than the first value when executing the first detection operation, and determines that refrigerant is leaking when the value related to discharge temperature of the compressor or the value related to degree of superheating is equal to or larger than a threshold value.

Abstract: Provided is an aqueous coating composition capable of forming a fluororesin coating film layer with excellent electrical properties and surface physical properties, and good adhesive properties. A coating composition containing 2 or more kinds of fluororesins, where at least 1 kind of the fluororesin, a fluororesin (I), has a number of functional groups of 30 to 1,000 per 106 main-chain carbon atoms, and where the coating composition further contains an inorganic filler, a surfactant, and a liquid medium.

Abstract: Provided is an electrode mixture including: an electrode active material; an organic solvent; a binder; and an additive; wherein the binder contains a fluorine-containing copolymer containing a vinylidene fluoride unit and a fluorinated monomer unit, provided that the vinylidene fluoride unit is excluded from the fluorinated monomer unit; the additive is a polymer material containing the following repeating unit: —[CH2—CHR]— wherein R is a chain or cyclic amide group, a nitrile group, or a substituted alkyl group formed by substituting at least one of hydrogen atoms of an alkyl group having 1 to 4 carbon atoms with a chain or cyclic amide group or a nitrile group; a content of the binder is 0.1 to 1.6 parts by mass with respect to 100 parts by mass of the electrode active material; and a content of the additive is 0.001 to 0.2 parts by mass with respect to 100 parts by mass of the electrode active material.

Abstract: An air conditioning and ventilating system including: an air conditioning device including a heat exchanger configured to generate conditioned air by heat exchange with a refrigerant; a ventilation device communicatively connected to the air conditioning device and including a supply air fan and/or an exhaust fan; an airflow volume detection unit configured to detect an airflow volume equivalent value of the ventilation device; and a control unit. On determination that the airflow volume equivalent value acquired from the airflow volume detection unit is equal to or less than a first predetermined value, the control unit sets an operation of the air conditioning device to a stop state.

Abstract: An apparatus for assisting maintenance work includes circuitry configured to perform learning based on a data set in association with a replaced or repaired part, or a new part after replacement indicated by work content information, and the learning includes processing an input of the data set or a portion of the data set, in accordance with model parameters of a machine learning model; determining work content information applied to the input; and updating the model parameters of the machine learning model based on the determined work content information.

Abstract: A degradation status of a casing containing fresh items is to be grasped. An information processing device includes: an internal information acquisition unit acquiring internal information, which is information regarding an inside of a casing containing a fresh item in a refrigerated state or a frozen state; and a degradation information generation unit generating information regarding degradation of the casing based on the internal information acquired by the internal information acquisition unit. The internal information acquisition unit acquires, as the internal information, atmosphere information, which is information regarding an atmosphere inside the casing, and the degradation information generation unit generates the information regarding the degradation based on the atmosphere information.

Abstract: A fluororesin material including a melt-fabricable fluororesin, the fluororesin material having a dielectric constant of 2.1 or less and a dielectric loss tangent of 0.00030 or less at 12 GHz. Also disclosed is a fluororesin material for high-frequency transmission including the fluororesin material and a coated electric wire for high-frequency transmission including a solid insulating coating layer made of the fluororesin material.

Abstract: The present invention provides an electrolytic solution capable of providing an electrochemical device, such as a lithium ion secondary battery, or a module that has excellent high-temperature storage performance. The electrolytic solution contains: a homocyclic compound other than aromatic compounds; and a cyclic dicarbonyl compound. The homocyclic compound contains at least one group selected from the group consisting of a nitrile group and an isocyanate group.

Abstract: A refrigeration apparatus includes: a compressor; a first heat exchanger that allows a first heating medium compressed by the compressor to flow therein and to radiate heat of the first heating medium; a second heat exchanger that allows the first heating medium having passed the first heat exchanger and a second heating medium cooling a cooling target to flow therein, and causes heat exchange between the first heating medium and the second heating medium; a first temperature sensor that detects temperature of the second heating medium in the second heat exchanger; and a control device that controls an operating frequency of the compressor.

Abstract: A method for removing metallic foreign matter from a fluororesin and a method for producing a fluororesin with reduced metallic foreign matter, which methods include applying a magnetic field to a fluororesin with a magnet while dropping the fluororesin by gravity to thereby remove metal, wherein the methods provide a screen made of a magnetic material in a flow path of the fluororesin dropped by gravity, and when the fluororesin passes through the screen, the screen is not vibrated.

Abstract: A fluoroalkyne compound can be efficiently synthesized from a fluoroalkane compound by a method for producing a fluoroalkyne compound represented by formula (1): R1C?CR2??(1) wherein R1 and R2 are the same or different and each is a fluorine atom or a fluoroalkyl group, the method comprising subjecting a fluoroalkane compound represented by formula (2): R1CHX1CFX2R2??(2) wherein R1 and R2 are as defined above; and X1 is a fluorine atom and X2 is a hydrogen atom, or X1 is a hydrogen atom and X2 is a fluorine atom, to a dehydrofluorination reaction in the presence of an ether solvent, the method satisfying at least one requirement selected from the group consisting of the following: (I) the fluoroalkyl group is a C1-C4 fluoroalkyl group, and (II) the ether solvent is a chain ether compound, and the dehydrofluorination reaction is performed in the presence of the solvent containing a chain ether and a base comprising a hydroxide and/or alkoxide of an alkali metal and/or alkaline earth metal.

Abstract: A heat exchanger includes: core fins including a first core fin and a second core fin; and films each of which is attached to a side face of each of the core fins. The core fins and the films are alternately stacked. The first core fin and the second core fin are stacked. An air flow passage, formed by the alternately stacked core fins and films and the stacked first core film and second core film, includes: a first port part serving as a first inlet; and a second port part facing the first port part and serving as a first outlet. An air flow flows from the first inlet to the first outlet in an air flow direction. The first core fin and the second core fin each include a port lateral side part that constitutes one of the first port part and the second port part.

Abstract: A positive electrode mixture containing: a polyvinylidene fluoride (A); a positive electrode active material (C) represented by the general formula (C): LiyNi1-XMxO2, wherein x is 0.01?x?0.7, y is 0.9?y?2.0, and M represents a metal atom (excluding Li and Ni); and an additive (D), wherein the polyvinylidene fluoride (A) is a combination of: (A2) a polymer containing vinylidene fluoride unit and a fluorinated monomer unit; and at least one selected from the group consisting of (A3) a polymer containing vinylidene fluoride unit and a polar group-containing monomer unit, and (A4) a polymer containing vinylidene fluoride unit, a fluorinated monomer unit, and a polar group-containing monomer unit. Also disclosed is a positive electrode famed from the positive electrode mixture and a secondary battery including the positive electrode.

Abstract: A method for manufacturing wire and cable products with a polymer cable component is provided. The method includes increasing the hardness of a polymer cable component in order to reduce compression and deformation of the cable components during manufacturing. In some instances, the hardness is temporarily increased prior to or during the process of creating twisted pair or during the cabling process.